Isolated Heap

13 Apr 2018

Some Brief Notes on WebKit Heap Hardening

WebKit has implemented substantial heap hardening techniques to improve memory safety in browsers. The changes include Gigacages, which isolate different object types into separate heaps, and IsoHeap, which allocates objects in dedicated memory pages. Additional protections involve pointer poisoning to make type confusion attacks more difficult.

20 Jun 2014

Isolated Heap & Friends - Object Allocation Hardening in Web Browsers

Web browsers have implemented object allocation hardening techniques to mitigate use-after-free vulnerabilities. These techniques include Internet Explorer's Isolated Heap, Firefox's Presentation Arena, and Chrome's PartitionAlloc. Each approach aims to constrain memory allocation strategies and make exploitation more difficult by separating object types and controlling memory reuse.